Yoshihiro Ohtsuka

DI Daicel Chemical Industries: 12 patents #41 of 893Top 5%

AC Asahi Glass Co.: 4 patents #490 of 2,251Top 25%

SC Sumitomo Metal Mining Co.: 3 patents #199 of 736Top 30%

MO Moritex: 2 patents #14 of 50Top 30%

Sharp Kabushiki Kaisha: 2 patents #5,184 of 10,731Top 50%

NE Nec: 1 patents #7,889 of 14,502Top 55%

SS Sanwa Shutter: 1 patents #17 of 45Top 40%

KC Katoh Electrical Machinery Co.: 1 patents #19 of 36Top 55%

Overall (All Time): #147,942 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–27 of 27 patents

Patent #	Title	Co-Inventors	Date
4885229	Photopolymerizable compositions	Fumio Takenaka, Kouzi Tohya	1989-12-05
4588290	Original holding plate hinging mechanism	—	1986-05-13